Patkar Extrusions Ltd. Manufactures High Impact Polystyrene/ Polypropylene Sheet. Patkar Extrusions Ltd. Offers a wide range of Stretch and Cling Films in various thickness and sizes for application in Packaging Industries. The High Impact Polystyrene/ Polypropylene Sheet is thermo forming Grade Sheets suitable for various door applications and is available in laminates having different colours.